Question

B is twice as old as A ,but twice younger than F. C is half the age of A but is twice older than D .Who is the youngest person in the group?

• A. A
• B. C
• C. D
• D. B

Answer 1

The correct option is C D

B = 2A

F = 2B

C = $\frac{1}{2}$ A and C = 2 D .............(i)
(i) $\Rightarrow$ F = 2 B = 4 A ..............(ii)
(iii) $\Rightarrow$ A = 2 C = 4 D $\Rightarrow$ 4 A = 8 C = 16 D ..........(iii)
(iii) and (iv) $\Rightarrow$ F = 2 B = 4 A = 8
C = 16 D ...........(iv)
$\therefore$ F is the oldest and D is the youngest